Thanks. I was unaware of that “incident”.
Note:
https://en.wikipedia.org/wiki/3-7-77
“3-7-77 was the symbol used by the Montana Vigilantes (Vigilance Committee) in Virginia City, Montana, USA in the 19th century. People who found the numbers ‘3-7-77’ painted on their tent or cabin knew that they had better leave the area or expect to be on the receiving end of vigilantism.
The numbers are used on the shoulder patch of the Montana Highway Patrol, who claim they do not know the original meaning of the symbol....”
I wonder what happened there on 03.07.1877?